Barking drum



May l, 1928. 1,667,996

P. P. wEsTBYE BARKING DRUM Filed Dec. 30. 1926 7 INVENTUR. A FEDER PEDERMN Wfryf.

/TToRNEy Patented May 1, 1928.

UNITED STATES l 1,667,996 PATENT OFFICE.

FEDER PEDERSON WESTBYE, OF PETERIBOROUGH, ONTARIO, CANADA..

BARXING DRUM.

Application :filed December 30, 1926, Serial No. 158,106, and in Canada October 11, 1926.

'lhis invention relates to apparatus elnployed in removing thc bark from pulp wood, and particularly to barking drums now generally in use for that purpose.

In this process a large quantity of logs is fed into a long drum or series ot drums, which on being rotated cause the logs to rub together and grind oil the bark. lVater is supplied to wash the ground bark from the logs and out of the drum through slots in its walls.

Owing to the great weight of the logs and the severe impacts of the tumbling logs, the drums require to be built very strong andr with as few weak points as possible.

The object of my invention is to provide an improved and simple `form of construction, having the maximum of strength and resistance to withstand the violent stresses that are generated during operation.

A further object is to provide a barking drum with means to remove readily the tires and gears or other mechanism used to produce the necessary rotation.

A further object is to provide a barking drum having an improved form of connection between the sectional drums.

My invention consists brieiy in a series of rines with inwardly rojecting teeth, to which channel bars are tted over the crowns of the teeth, and riveted directly thereto, forming a slotted cylinder having a practically smooth interior surface of the character required. To this cylinder by means of the rings, the driving and running mechanism is detachably secured.

When two or more sectional drums are installed, to form one ap aratus, a special sleeve covers the edges oi) the adjacent end plates.

The following is a description of one form in which my invention may be carried out, reference bein drawings in w ich Fig. 1. is a cross sectlon of a ring on the line 1-1 of Fig. 2.

Fig. 2. is a plan View of a portion of a ring from outside.

Fig. 3. is a cross section of a ring on the line 3--3 of Fig. 2.

Fig. 4. is a cross section of a ring with a tire mounted thereon.

Fig. 5. is a side view of the same partially in section. y

Fig. 6. is a cross section of a ring with a gear mounted thereon.

made to the accompanyingr Fig. 7. is a side view of the same partially in section.

Fig. 8. is a side view of a barking drum constructed with the improved features of my invention, showing in section the sleeve covering the end plate.

In the drum shown in Fig. 8, the ring 1, surrounding the bars 2, are formed with nwardly projecting teeth 10, with a continuous mid rib 11. These rings are preferably steel castings.

The rings 1, may have indentations 10, inwardly projecting therein, with a continuous midrib ll, as shown in Figures 2 and 3.

As shown in Fig. 3, the channel bars 2, fit over the top of the teeth 10, with their anges 20, fitting to the sides of the teeth 10. A series of rivets 3, on each side of the midrib l1, short and with heads countersunk, provide a very secure attachment between the rings 1, and the channel bars 2.

To provide for the. support of the tires 4, or the gears 5, the rings l, have outwardly projecting flanges 12, to which the inwardly projecting flanges 41, of the tire 4, and the flange 5l, of the gear 5, are secured by a series of bolts 6.

In the drum as shown in Fig. 8. each channel bar 2, is riveted to five rings spaced apart, and to the end plates 7. This arrangement can be varied by the addition or the omission of some of the rings, according to the length of the drums, or the strength of the construction desired.

The teeth of the rings may be solid metal, in place of the partially hollow form shown.

The tires and gears may be secured to the rings by other means, but I prefer to have them readily detachable.

The end plates 7, of each section of a complete barking apparatus, which are adjacent as shown at the right side of Fig. 8, are provided with a sleeve or flanged ring 8, covering the inner edges of the plates and riveted to the plate 7, nearest the feed `end of the drum.

With this construction, a drum is provided Wth an inner surface practically smooth, having slots between the adjacent channel bars extendin between the rings.

The channel bars tted over the crowns of the teeth of the rings give a very robust construction to the cylinder. a

The iianges of the channel bars enclosing the sides of the teeth protect the short rivets from shearin action and thereby ensure great durability and freedom from repairs.

The attachment of the tires and gears to the rings enable easy and rapid replacement for worn or injured parts.

The sleeve 8, which covers the inner edge of the end plates 7, not only prevents the entrance of wedges of wood jamming in the space between the adjacent end plates, which is liable to cause, damage and displacement, but also protects the edges of the plates from damage from the blows of the logs passing through the drum.

What I claim isz- 1. A barking drum comprising a series of rings having integral inwardly projecting teeth, with a plurality ot channel hars secured over the crowns of the teeth, and adapted to form a longitudinally slotted cylinder.

2. A barking drum comprising a series of rings with integral inwardly projecting broad teeth, with a plurality of channel bars adapted to fit over the crowns of the teeth and rigidly secured thereto, and spaced to provide slots between the sides of the bars.

3. A. barking drum comprising a. series of rings having integral inwardly projecting teeth, a plurality of channel bars directly supported on the crowns of the teeth and rigidly secured thereto, adapted to form a longitudinally slotted cylinder.

4. A barking drum comprising a series of rings with continuous` midrilis having integral inwardly projecting teeth, a plurality of channel mrs directly supported on the crowns of the teeth and rigidly secured thereto, adapted to form a longitudinally slotted cylinder.

5. A barking drum comprising a series of rings with continuons midribs having i11- tegral inwardly projecting teeth, a plurality of channel bars directly supported on the crowns of the teeth and rigidly secured thereto by counter sunk rivets, adapted to form a longitudinally slotted cylinder.

G. A barking drum comprising a series of large rings with integral inwardly projecting Ibroad teeth, a plurality of shallow channel bars ada )ted to fit over the crowns of the teeth an( rigidly secured thereto, adapted to form a cylinder with a practically smooth interior surface, having narrow longitudinal slots between the sides of the bars.

7. A barking drum comprising a series of large rings with integral inwardly projeeting teeth, adapted to be attached outwardly to spur gear rings and racer rings, a plurality'ot shallow channel bars fitted over the 'crowns of the teeth and rigidly secured thereto, spaced to provide longitudinal slots between the sides of the adjacent bars.

8. In a barking drum thel combination of a plurality ot' channel bars mounted on integral inwardly projecting indentatious in a series of rings, with outer rings removably secured to certain of such indented rings.

9. In a barking drum the combination of a plurality of channel bars mounted on the integral inwardly projecting indentations in a series of rings certain of which have outwardly projecting flanges with outer rings having inwardly projecting flanges and bolts to secure the Hanges of each pair of rings.

10. In a barking drum the combination of a series of rings having integral teeth projecting inwardly, with a plurality of channel bars closely fitting over the top and sides of the teeth and riveted directly thereto.

1l. A barking drum comprising a series ot rings with inwardly projecting indentations and a plurality of channel bars secured on the indentations adapted to forni a longitudinally slotted cylinder.

12. An article ot manufzwture comprising a ring formed with inwardly projecting indentations adapted to support the channel bars of a barking drum.

13. In a barking drum, a series of rings with inwardly projecting indentations and a plurality of channel bars secured to the indentations.

Montreal, 16th November, 1926.

FEDER PEDERSON WESTBYE. 

